Futaba Corporation R7201SB-24G Receiver User Manual

Futaba Corporation R7201SB-24G Receiver

Product Information

Specifications

• Product Name: Futaba R7201SB FASSTest-2.4GHz Compatible Receiver
• Communication System: FASSTest-2.4GHz Bidirectional Communication System
• Equipment: Dual Rx Link System
• Port: S.BUS2/RX Port and 1 Channel (CH3) for Conventional System
• Applicable Systems: Futaba FASSTest-2.4GHz System Transmitter

Product Usage Instructions

Telemetry OFF Mode
This mode is used to turn off telemetry transmission to prevent collision of telemetry signals when using dual RX link mode in FASSTest12CH mode.

1. Turn on the receiver. (The transmitter should always be OFF)
2. Press and hold the SW (switch) for 5 seconds or more.
   • The switch will blink every 5 seconds in the following sequence: RED – ORANGE – GREEN – ORANGE (slow blink)
3. Release the switch.
   • The switch blinks ORANGE once and displays “FASSTest12CH(Telemetry OFFmode : INH”)
   • Press the switch once more to return to flashing ORANGE once
4. Press the switch.
   • The switch blinks ORANGE twice and displays “FASSTest12CH(Telemetry OFFmode : ACT”)
5. Press and hold the switch.
   • The switch blinks ORANGE.

Dual Rx Link

1. Install two receivers on the aircraft as shown in the connection example.
2. Link the two receivers using the dual receiver feature of the transmitter.
   • For FASSTest 18CH, select dual mode and link primary receiver.
   • Follow the link procedure for each receiver manual.
3. Turn on the main transmitter in link mode and link the primary receiver.
   • For FASSTest 18CH, select dual mode and link secondary receiver.
   • Turn on the sub receiver and link it.

Note: When using the dual receiver function, the telemetry function of the main receiver can be used, but the sub-receiver telemetry function is not available.

Telemetry for FASSTest12CH
In FASSTest12CH mode, after linking R7201SB in telemetry OFF mode, link the receiver you want telemetry to. The transmitter will show the telemetry of the last linked transmitter.

1. First Link:
   • R7201SB Telemetry OFF mode: ACT
2. Second Link:
   • R7201SB Telemetry Display: Change to this mode when using FASSTest12CH in dual RX link mode.

After restarting, the LINK LED lights up in FASSTest12CH Telemetry OFF mode.

Antenna Installation Precaution
The R7201SB receiver should be protected from vibration by foam rubber, Velcro, or similar mounting methods. It should also be protected from moisture and kept away from conductive materials to avoid short circuits.

FAQ

• Q: Can I use the telemetry function of the sub-receiver when using the dual receiver function?
• A: No, the sub-receiver telemetry function is not available when using the dual receiver function.

Thank you for purchasing a Futaba R7201SB FASSTest-2.4GHz compatible receiver. TheR7201SB receiver features bi-directional communication with a FASSTest Futaba transmitter using the S.BUS2 port. Using the S.BUS2 port an impressive array of telemetry sensors may be utilized. It also includes both standard PWM output ports (ch3). The R7201SB can also be switched to the Dual Rx Link System. This system can ensure safety by mounting two FASSTest receivers on one aircraft.

FASSTest-2.4GHz Bidirectional Communication System

• Dual Rx Link System Equipment
• S.BUS2 / RX Port and 1 Channel (CH3) for Conventional System Receiver

Applicable systems: Futaba FASSTest-2.4GHz system transmitter

Usage precaution

• Analog servos cannot be used with the R7201SB in the FASSTest 12CH mode.
• Analog servos move slightly at startup in the FASSTest 26CH/18CH mode.

WARNING
Changes or modification not approved by the party responsible for compliance could void the user’s authority to operate the equipment. The R7201SB receiver should be protected from vibration by foam rubber, Velcro, or similar mounting methods. Protect from moisture. Keep away from conductive materials to avoid short circuits.

Antenna installation precaution

• Do not cut or bundle the receiver antenna wire.
• The antennas must be mounted in such a way to assure they are strain relieved.
• Keep the antenna as far away from the motor, ESC and other noise sources as you possibly can.
• Do not touch the antenna to metal, carbon, or other conductive material.
• Be sure that the two antennas are placed at 90 degrees to each other.
• The R7201SB has two antennas. In order to maximize signal reception and promote safe modeling Futaba has adopted a diversity antenna system. This allows the receiver to obtain RF signals on both antennas and fly problem-free.

Antenna installation for carbon fuselage
You must leave 30mm at the tip of the antenna fully exposed. The exposed antenna should be secured so that it cannot move around or back inside of your aircraft.

Link precaution

• Do not perform the linking procedure while the motor’s main power is connected or the engine is operating as it may result in serious injury.
• When the linking is complete, please cycle the receiver power and ensure the receiver is properly linked to the transmitter.
• Power on the system in this order: Transmitter first, followed by the receiver.
• If the R7201SB receiver was previously linked to another transmitter, make sure that transmitter is not operating while linking the receiver to the new transmitter.

Be careful of connector insertion

• Don’t connect an S.BUS servo / gyro to S.BUS2 connector.
• Do not mistake the insertion position/direction of the connector.
• If make a mistake as shown in the diagram below, there is a risk of fire, burnout, or burns.

Be sure that when using ESCs regulated output the capacity of the ESC must meet your usage condition. *Never use dry batteries for the power supply of the R7201SB as they may cause difficulties.

(Typical installation)

R7201SB Specifications

FASSTest-2.4 GHz system (36CH/18CH/12CH mode) S.BUS2 and S.BUS port and 1 Channel for conventional system receiver

• Dual antenna diversity
• Size: 0.85 x 1.56 x 0.26 in. (21.5 x 39.5 x 6.5 mm)
• Weight: 0.17 oz. (4.9 g)
• Power requirement: 3.7 V to 7.4 V(Voltage range: 3.5 V to 8.4 V)
• Battery F/S Voltage: It sets up with a transmitter

LED Indication

（3 second）

Unrecoverable error (EEPROM, etc.)| Red Green

Alternate blink

In Dual RX Link Mode

External receiver is receiving error or not

connected. S.BUS signal not received

| Red Solid
S.BUS signal reception from external receiver

(also received by external receiver)

| Green Solid

In FASSTest12CH Telemetry OFF Mode

Link
FASSTest is a bidirectional communication system between the R7201SB receiver and FASSTest capable transmitters. Multiple optional telemetry sensors may be connected to the S.BUS2 on the receiver and that data is in turn displayed on the transmitter.

Link to the transmitter

1. Bring the transmitter and the receiver close to each other, within 20 inches (half meter).
2. Turn on the transmitter. Place the transmitter into the receiver linking mode.
3. Turn on the receiver.
4. The receiver will wait for the linking process to begin for 2 seconds. Following that it will return to the normal operation mode.
5. When the LED of the receiver changes from blinking red to solid green, linking is complete.

(A link waiting state is ended in 3 second.)

• Refer to the transmitter’s operation manual for complete details on how to place the transmitter into the linking mode.
• If there are many FASSTest systems turned on in close proximity, your receiver might have difficulty establishing a link to your transmitter.
• This is a rare occurrence. However, should another FASSTest transmitter/receiver be linking at the same time, your receiver could link to the wrong transmitter. This is very dangerous if not noticed.
• To avoid the problem, we strongly recommend that you double check whether your receiver is really under control by your transmitter.
• If the System Type of the transmitter is changed, the receiver will need to be re-linked to the transmitter.

S.BUS2
S.BUS2 extends S.BUS and supports bidirectional communication. Sensors are connected to the S.BUS2 port.

Compliance Information Statement (for Canada)
This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions:

1. this device may not cause interference, and
2. this device must accept any interference, including interference that may cause undesired operation of the device.

This equipment complies with IC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body.

Channel Modes
The R7201SB is capable of changing its channel allocations as described in the table below. This is especially important when using the receiver in a dual receiver mode. See your transmitter operation manual for complete details on operating in the dual receiver mode.

R7201SB CH Mode table

1. Turn on the receiver. [Transmitter is always OFF]
2. Press and hold the SW for 5 seconds to 10 seconds.
3. When the LED of the receiver changes from blinking red to blinking orange, SW is released.
4. The LED should now blink red two times in the patterns described in the chart below.
5. Each press of the SW advances the receiver to the next mode.
6. When you reach the mode that you wish to operate in, press and hold the SW for more than 2 seconds. When LED blinks in orange, it is the completion of a mode change, SW is released.
7. Cycle the receiver power off and back on again after changing the Channel mode.

Check

1. Turn on the receiver. [Transmitter is always OFF]
2. Receiver enters link waiting state
3. The LED will flash for the current CH output mode.

LINK LED

• Red Solid
  • Start → 2 second
  • later → Red Blink (3 second）
• Current CH mode display

Declaration of Conformity (for EU)
Hereby, Futaba Corporation declares that the radio equipment type is R7201SB in compliance with Directive 2014/53/EU. The full text of the EU declaration of conformity is available at the following internet address: https://www.rc.futaba.co.jp/support/manual/

Dual Rx Link System
By installing two receivers in one aircraft, if one receiver becomes unable to communicate, the other receiver can be operated.

In Dual RX link mode, the S.BUS2/RX port is for reception only, so use separate ports for S.BUS output and S.BUS2 input/output.

Connection example

Example of main R7201SB:
Use dual RX link mode of R7201SB. *PWM3CH cannot be used.

Example of sub R7201SB:
Use dual RX link mode of R7206SB. *Do not turn on the dual RX link mode of the R7201SB.

How to change to Dual RX Link mode

1. Turn on the receiver. [Transmitter is always OFF]
2. Press and hold the SW for 5 seconds or more.
3. Blinks GREEN once
4. Press switch
5. Press and hold the SW
6. Release SW
7. Turn off the receiver power

Check

After restarting, the MODE LED lights up.

External receiver is receiving error or not connected. S.BUS signal not received| Red Solid
S.BUS signal reception from external receiver (also received by external receiver)| Green Soli d

FASSTest12CH(Telemetry OFF）mode
This mode is forcibly turning off telemetry transmission to prevent collision of telemetry signals from the receiver to the transmitter when using dual RX link mode in FASSTest12ch mode.

1. Turn on the receiver. [Transmitter is always OFF]
2. Press and hold the SW for 5 seconds or more.
3. Blinks ORANGE once
4. Press switch
5. Press and hold the SW
6. Release SW
7. Turn off the receiver power

Check

After restarting, the LINK LED lights up. In FASSTest12CH Telemetry OFF Mode

How to Dual Rx Link

1. Install two receivers on the aircraft as shown in the connection example.
2. Link the two receivers using the dual receiver feature of the transmitter.

For systems without dual receiver capability, link each receiver in turn.

Transmitter in link mode
For FASSTest 18CH Select dual mode and link primary

About telemetry system
When using the dual receiver function

• The telemetry function of the main receiver can be used
• Sub-receiver telemetry function is not available

Telemetry for FASSTest12CH
In FASSTest12CH mode, after linking R7201SB in telemetry OFF mode, link the receiver you want telemetry to. (The transmitter will show the telemetry of the last linked transmitter.)

Compliance Information Statement (for U.S.A.)
This device, trade name Futaba Corporation, model number R7201SB, complies with part15 of the FCC Rules. Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may cause undesired operation.

CAUTION : To assure continued FCC compliance

1. Any changes or modifications not expressly approved by the grantee of this device could void the user’s authority to operate the equipment.
2. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. The responsible party of this device compliance is:

FUTABA Corporation of America 2681 Wall Triana Hwy Huntsville, AL 35824, U.S.A. Phone : 1-256-461-9399 FAX :1-256-461-1059 E – mail : service@futabaUSA.com

FUTABA CORPORATION
Hobby Radio Control Business Center Sales & Marketing Department 1080 Yabutsuka, Chosei-mura, Chosei-gun, Chiba-ken, 299-4395, Japan TEL : +81-475-32-6051, FAX : +81-475-32-2915 ©FUTABA CORPORATION 2023, 9 (1)\

References

• サポート 取扱説明書ダウンロード | 双葉電子工業株式会社 ラジオコントロール

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